Pistol with firing mechanism that can easily be adapted to various modes of operation

ABSTRACT

A basic device for a pistol, intended to work in the DAO mode of operation and easily adaptable to other operation modes, is disclosed. The pistol has a rod, including in an edge opposed to a trigger, a stick and a crosswise arm. The crosswise arm is projected from the lengthwise body of the rod, toward the central portion of the pistol, and includes a front surface, able to mechanically interfere with a tongue, and a wing, frontal to the crosswise arm and projecting downwards, in which middle region an oblong opening is included; a guiding pin for the rod. The guiding pin of the rod crosses the oblong opening of the wing of the crosswise arm, so to limit the movement of the crosswise arm upwards and downwards; and a rod ramp. A pistol for actuation in SA mode is also disclosed.

FIELD OF THE INVENTION

The present invention refers to a pistol, more specifically a pistolcomprising a firing device presenting a basic configuration which iseasily modifiable for actuation in different modes of operation.

BASICS OF THE ART

The state of the art referring to fire guns, more specifically pistols,has for long incorporated various projects of firing devices, each onewith its particularities. These firing devices can be divided inspecific groups according to the mode of operation of the pistol, suchas: single action (SA); double action (DA); or mixed (DA/SA), i.e. theycan operate both in the single action mode and the double action mode,depending on the positioning of a given mechanical element of control,usually a side key over the body of the pistol. No matter which is themode of operation, a common characteristic to all these pistols is thepresentation of a specific project and/or device for each one. However,we are unaware of a pistol or a firing device for a pistol,rationalizing its production, so to enable to make models with differentmodes of operation, but with similar characteristics ofoperation/components.

SUMMARY OF THE INVENTION

Therefore, it is a main object of the present invention to supply afiring device for a pistol which, with a few changes, may be convertedso to operate in double action, single action and alternative doubleaction/single action modes.

Furthermore, another object of the present invention is constituted by afamily or a series of pistols, comprising double action pistols, singleaction pistols and alternate (double or single) action pistols, producedfrom a basic project, so to reduce the costs of the project, productionand assembly of their components and body, thus allowing an optimizationof the project and therefore of the final pistols, whichever is theirmode of operation.

The objects above are reached and satisfied by a basic pistol, intendedto activate, in the DAO mode, a pistol with a firing device which iseasily adaptable to various modes of operation, comprising a wrist overwhich a latch is moved, said wrist comprising a butt, inside which thecomb, the trigger guard involving the trigger and a metal back support,intended to lodge part of the components of the pistol firing device,wherein said firing device comprises said trigger, hinged in pivot to afirst edge of the rod, the opposed edge of said rod is located on theback support, said latch involves and lodges the percussor, locatedbehind and aligned to the chamber wherein the cartridge is located, andsaid latch has, around its front portion, the spring of the percussor,acting over the backstop and, on its back portion, a tongue projectingdownwards. Said pistol also comprises a rod, in the shape of a laminarelement forming and including, in said edge opposed to the trigger, astick and a crosswise arm, wherein said crosswise arm is projected fromthe lengthwise body of the rod, towards the central portion of thepistol, and includes a front surface, able to mechanically interferewith said tongue, and a wing, frontal to the crosswise arm andprojecting downwards, in which middle region an oblong opening isincluded; a guiding pin for the rod, fixed to the back support, with itslongitudinal beam parallel to the length of the piston, wherein saidguiding pin of the rod crosses the oblong opening of the wing of thecrosswise arm, so to limit the movement of said crosswise arm upwardsand downwards; and a rod ramp, in the shape of an oblong laminar body,fixed to a lower edge on a crosswise beam and having a fold in theopposed and upper edge, turned outside over the center of the pistol, todefine a contact surface mechanically acting against the rod stick.

From the above basic pistol, a pistol intended to act in the SA mode isalso disclosed, which firing device also includes: a bush, in the formof a cylinder with a central hole and located around the guiding pin ofthe rod and ahead of the wing of the crosswise arm of the rod, so tolimit the path forwards of said rod; and a rod ramp also comprising adisconnecting arm, which is vertically projected upwards and includes,in its upper edge, a projection able to mechanically interfere with arib, located on the internal side of the fixing wing wherein said latchslides, so to displace said rod ramp to inside the pistol.

Finally, a second alternative model of pistol, intended to work in theDA/SA mode, is included, also comprising: a rod ramp also comprising adisconnecting arm, which is vertically projected upwards and includes,on its upper edge, a projection able to mechanically interfere with arib, located on the internal side of the fixing wing wherein said latchslides, so to displace said rod ramp to inside the pistol; a rod latchin the form of a hinge over a respective beam located in parallel to thelengthwise beam of the pistol, defining: a lower portion of said rodlatch, having an external surface able to be activated by a key, as wellas a spring, located in the internal part of said lower portion, so toconstantly push said lower portion outside, and an upper portion of therod latch, comprising an arm which is extended in parallel to the rodlatch beam, as well as a head located on the upper edge of said rodlatch; and a restraint, basically in the form of a cube, provided with acentral hole through which said restraint is assembled over the guidingpin of the rod in a position between the wing of the crosswise arm ofthe rod and the spring located around the guiding pin of the rod.

BRIEF DESCRIPTION OF DRAWINGS

The object of the present invention will be better understood in thelight of the detailed disclosure below, presented as an illustration andnot a limitation, with reference to the attached figures, wherein:

FIG. 1 is an upper side view of a pistol of the present invention, inpartial section and showing its main components;

FIGS. 2 to 10 are schematic views showing a pistol with DAO mode ofoperation, in partial section and corresponding to the various steps ofoperation of this embodiment of the invention;

FIGS. 11 to 20 are schematic views showing a firing device for a pistolof the present invention, only operated in the single action mode, withthe changed device over the basic firing device as shown by FIGS. 2 to10; and

FIGS. 21 to 28 are schematic views showing a firing device for a pistolof the present invention, operated in the double action/single actionmode.

DETAILED DESCRIPTION OF THE INVENTION

According to the present invention, the objects are reached thanks to afiring device for a pistol with only double action (DAO), whichmechanism may be easily modified to reach a single action (SA) pistoland also a double/single action (DA/SA) pistol.

FIG. 1 is a schematic upper side view of a pistol 1 only of the doubleaction (DAO) type, having a wrist 10, including the butt 2, located onits lower back portion, the lower part of the latch 6 and the guides(not shown) to slide said latch 6 over the wrist 10. In a preferableembodiment of the invention, the wrist 10 is an injected polymericstructure provided with a few metal insertions, wherein said guides toslide the latch 6, as well as the back support 3, located above the butt2 and intended to lodge part of the components of the firing device ofthe pistol 1, which will be disclosed in detail further below.Furthermore, the trigger guard 28 is also formed as a single part fromthe wrist 10. Inside the butt 2, a lodgment is included to receive thecomb 4 intended to store and supply the cartridges 11 as known.

In an advanced position over the butt 2, the trigger 5 is included,which is hinged to said wrist 10 of the pistol 1 or, more specifically,said trigger 5 is hinged to the central support of the wrist 10, whichis a metal part lodged inside the wrist 10. The upper portion of thepistol comprises the latch 6 which can be transported over saidstructure of the wrist 10, by means of said four guides (not shown)which, in their frontal portion, involve the pipe 7 and the respectivereturn spring 8. In a front position over the pipe 7, the chamber 9 isincluded to lodge a cartridge 11, which chamber is located, with thepistol 1 in a resting position, in a lengthwise quota equal to thetrigger 5. Furthermore, the back portion of the latch 6 covers thepercussor 12 and the respective spring of the percussor 13.

More specifically, FIGS. 2 to 10, showing schematic views of the firingdevice for the pistol 1 operated only in the double action (DAO) mode,show components of the firing device, with parts removed not tocompromise the clarity of the figures.

Therefore, the trigger 5, hinged to said central support of the wrist10, is hinged to the rod 14, so that the movements made by the trigger 5are sent to the rod 14 and vice versa. Said rod 14 has the shape of aconformed laminar element and includes, on its opposed edge to thetrigger 5, a stick 16 and a crosswise arm 17. More specifically, thecrosswise arm 17 is projected from the lengthwise body of the rod 14towards the central portion of the pistol 1, and having a front surface18, able to mechanically interfere with a tongue 24 projected from thepercussor 12 and a wing 19, frontal to the crosswise arm 17 andprojected downwards, in which central region an oblong opening 20 isincluded, inside which the guiding pin of the rod 21 is included. Theguiding pin of the rod 21 is fixed to said metal back support of thewrist 10 and is intended to limit the movement upwards and downwards ofthe rod 14, but not its back and forth translation.

Said stick 16 of the rod 14 acts over the rod ramp 30 which, on a loweredge, is fixed to a crosswise beam 22 and, on the opposed and upperedge, has a fold towards the outside of the center of the pistol 1, thusdefining a contact surface with the stick 16 of the rod 14.

As stated, the percussor 12 is located inside the region as limited bythe latch 6 and is able to move freely, back and forth, from said latch6. More particularly, the percussor 12 has a cylindrical shape,frontally provided with a stick 23 for the percussion of the cartridge11, and having a frontal tongue 24, which forms a ramp 27 on its lowerback portion, intended to mechanically interact with the crosswise arm17 of the rod 14. Furthermore, and around the central portion of thepercussor 12, said spring of the percussor 13 is located.

A few other details of the above components, as well as the form ofoperation of the device of the present invention in the double actionmode of operation, will now be particularly explained based on FIGS. 2to 10.

On FIG. 2 (and also 10), the pistol 1 is munitioned, i.e. it has acartridge 11 in the respective chamber 9 with the comb 4 loaded, as wellas a trigger 5 in starting course, i.e. in its most advanced position.Therefore, the user starts the firing procedure by moving the trigger 5backwards, causing the movement of the rod 14 in the same direction.Such movement of the rod 14 is guided through the guiding pin 21 of therod, so to guarantee that said rod 14 is not displaced upwards.Consequently, and due to the mechanical interference between the frontsurface 18 of the crosswise arm 17 of the rod 14 with the tongue 24 ofthe percussor 12, said percussor 12 will also be moved backwards againstthe resistance as imposed by the spring of the percussor 13, as shown byFIG. 2.

That same position is shown by FIG. 3 in its respective enlarged detail(DET 3), which is an enlarged view of the back support 3 of the pistol1, from which we can notice that, in that point of the movement, thestick 16 of the rod 14 keeps contact with the rod ramp 30, thus forcingsaid rod 14 below and therefore lowering the crosswise arm 17 until therelease of the tongue 24 of the percussor 12.

At that moment, i.e. when the crosswise arm 17 no longer works againstthe tongue 24 of the percussor, said percussor 12 is pushed frontwardsby the action of the spring 13, causing the percussion of the ammunitionlocated inside the chamber 9 of the pipe 7, through its stick 23.Particularly, FIGS. 4 and 5 show the moment of the percussion of thecartridge 11, wherein we can see the rod 14 in its maximum lowerposition and the tongue 24 of the percussor advanced over the crosswisearm 17 of the rod 14.

From this point, the so-called cycling starts, i.e. the procedure toeliminate the fired cartridge, reload the chamber with a new cartridgeand reposition the firing device for new firing. Said sequence of eventsis shown, step by step, on FIGS. 6 to 10.

Therefore, after the firing and during latch 6 cycling, caused by thegas expansion in the cartridge, the percussor 12 follows backwardstogether with the latch 6 (please see FIG. 6—maximum backwards positionof the latch). After the latch ends the quick clicking process,supplying the chamber 9 and returning to the front, the user starts torelease the trigger 5, causing the rod 14 of the trigger to follow saidmovement to the front (please see FIG. 7). During the movement of theguide 14 backwards, its crosswise arm 17 hits the ramp 27 of the tongue24, thus forcing said rod 14 downwards (please FIGS. 8 and 9). Thismovement downwards is limited by the guiding pin 21 of the rod, untilthe crosswise arm 17 is frontal to the tongue 24, going up and againlocking the latch 6, i.e. taking a similar position to the initialposition as shown by FIGS. 10 and 2. Therefore, the device is fully inits initial position and, at that moment, the user may perform a newshot. We should also highlight that, as an inherent characteristic ofthe DA activating system for the pistol 1, the trigger 5 returns to itsinitially more advanced position which, to make a new shot, should bepulled by the user throughout its course, by repeating the abovedisclosed steps.

A second way of embodiment of the present invention comprises a pistol40, such as shown by FIGS. 11 to 20, relative to the various steps ofthe shot procedure in SA mode and wherein numerical references similarto those used for FIGS. 2 to 10 show equal components. This way ofembodiment basically shows two differences over the previously disclosedform, i.e. the presence of the bush 42 and a disconnecting arm 43projecting from the rod ramp 30′.

More particularly, and with specific reference to FIG. 11, 42 shows abush which is located around the guiding pin 21 of the rod 14 working soto limit the range of displacement of the wing 19 of the arm 17 of theguide 14, thus forbidding said rod 14 to advance beyond a given point.

As stated, the other change as introduced in this way of embodiment ofthe invention relates to the rod ramp 30′, presenting a disconnectingarm 43 projecting upwards and having, on its upper edge, a projection 44able to interfere with the latch. More specifically, FIGS. 14 and 15 areschematic upper rear views wherein the rib 45 of the latch 6, as locatedin the inner side of the fixing wing 46 wherein said latch 6 slides, canbe identified.

Therefore, FIG. 11 is a perspective view of the back portion of thepistol 40, in an equivalent moment as shown by FIG. 3 above, i.e. withthe trigger 5 being pulled behind by the action of the user of thepistol 40. Also in this case, the rod 14 goes back and is lowered by theaction of the stick 16 under the ramp 30′ (please refer to FIG. 12 for asimilar view to FIG. 11 with the rod 14 almost fully lowered).Simultaneously, the crosswise arm 17 is also lowered until the physicalcontact between the surface 18 of the arm 17 and the tongue 24 of thepercussor 12 is lost. At that moment, the percussor 12 is released andhits the cartridge 11 (please refer to FIG. 13, relative to aperspective view showing the moment of firing the gun 30′), similarly tothe disclosures on the above embodiment. As a result of this shot, thelatch 6 returns to its maximum backwards position, releases the firedcartridge 11 and inserts a new cartridge in the chamber 9, just asdisclosed and known in the art.

However, with the return of the latch 6, said rib 45 of the latch 6works over the upper projection 44 of the disconnecting arm 43 of therod ramp 30′, causing its displacement to the center of the gun and lossof contact with the stick 16 of the rod 14. More particularly, FIGS. 14and 15 are schematic upper end views showing two consecutive momentsduring the backwards movement of the latch 6, respectively with the rod14 in an intermediate position (FIG. 14) and later in a fully upperposition (FIG. 15). As we can see, from the displacement to inside therod ramp 30′, the stick 16 loses contact with the rod ramp 30′ and ispushed upwards (we remind that, at this point, the trigger 5 is stillpressed backwards by the user, thus forcing the rod 14 backwards).

FIGS. 16 to 19 are upper side views showing the return of the latch 6from its maximum backwards position to its resting or initial pathposition. Therefore, due to the upper position of the rod 14, the tongue24 of the percussor 12 hits the front surface 18 of the crosswise arm17, and therefore cannot go forward. Said block made on the rod 14 isalso the result of the presence of the bush 42 which, as stated, forbidsthe crosswise arm 17 of the rod 14 to go forward (please see FIG. 17).Just as a comparison, FIG. 7 shows the return of the latch 6 and thepercussor 12, which is possible due to the lower position of the rod 14and particularly its crosswise arm 17, allowing the tongue 24 of thepercussor 12 to pass over a crosswise arm 17 with no mechanicalinterference between them.

In this case, as well as in the definition of the firing SA system, thepercussor can only return to its advanced position when the userreleases the trigger 5 to return to its operational position in SA. Morespecifically, FIGS. 18 and 19 show intermediate return positions for thetrigger 5 to its operational position in SA, with the correspondingreturn of the rod 14, and FIG. 20 shows the pistol 40 in its finalposition. As we can see, the percussor 12 gradually returns to itsposition just as the trigger 5 is released by the user. The tongue 24 ofthe percussor 12 remains in contact with the crosswise arm 17 for thewhole displacement of the rod 14, thus remaining until a new shot isperformed. We should highlight that, in the operational position asshown by FIG. 20, the trigger 5 and the rod 14 remain in an intermediateposition between the initial position of the pistol 40 (FIG. 11) and theshot position of the gun. Said effect is due to the presence of the bush42 limiting the return path of the rod 14 and therefore the trigger 5.In the following shot, the user will need to move the trigger 5 for asmaller path to release the percussor 12 and the cartridge 11, i.e.eliminating the whole initial step of movement backwards of the rod toengage the tongue 24 of the percussor 12, just like in the DA operationmode.

We should also highlight that, during the return of the percussor to itsinitial advanced position, the latch has already returned to itsrespective advanced position and, therefore, the rib 45 of the wing 46of the latch 6 no longer works over the upper projection 44 of thedisconnecting arm 43 of the rod ramp 30, and therefore the stick 16 ofthe rod 14 is again in contact with said rod ramp 30.

As previously stated, the differences existing between the SA embodiment(FIGS. 11 to 20) and the DAO embodiment are limited to the inclusion ofthe bush 42 and the disconnecting arm 43. The rib 45 of the latch 6 isalso present in the DAO embodiment, but said rib 45 does not work on therod ramp 30 due to the non-existence of said disconnecting arm 43 andthe respective projection 44. Said solution allows to reach the objectsof maximum standardization of the production line, whichever is themodel of pistol to be produced, i.e. reducing at maximum the differencesand particularities between them.

Anyway, the simple and efficient inclusion of the bush 42 and thedisconnecting arm 43 allows to change both the course of displacementand the position of the crosswise arm 17, and therefore the whole rod14. Therefore, and after the return of the latch 6, the percussor can nolonger advance freely, since it is blocked by the crosswise arm 17, nowlocated in a recessed and upper position, thus interfering with thereturn path of the tongue 24 of the percussor 12.

We will now disclose the last way of embodiment of the presentinvention, as specifically shown by FIGS. 21 to 28, wherein numericreferences similar to those used for FIGS. 1 to 20 show equivalentcomponents. Particularly, the firing device of this embodiment of thepistol allows its use in both DA and SA modes, depending on thecircumstances.

As preliminarily seen, for the basic device of the SA pistol at issue,acting in DAO mode, to be built so to be changed to work in SA mode, thebush 42 must be included in the guiding pin of the rod 21, so to forbidthe free movement forward of the rod 14 at the time of returning thelatch 6, and also the disconnecting arm 43, relative to the rod ramp 30′and mechanically activated by the latch 6, must be included.

In the present DA/SA mode of actuation, the pistol 50 must be able toactuate in the DA mode and in the SA mode. More specifically, said DA/SAactuation form is defined by a first shot in DA mode and by consecutiveshots in SA mode, until the user returns the pistol 50 to the DA mode ofactuation, by voluntarily activating the external key or in the case ofa involuntary shot failure. For that purpose, the inventor has conceiveda firing device wherein a mobile element is included, to work like thebush 42 in the SA mode pistol 40, but which can also be displaced fromits blocking position, thus allowing the pistol 50 to also work in DAmode.

Therefore, and in comparison with the firing device of the DA modepistol 1, the enhancements of said embodiment are both the disconnectingarm 43 of the rod ramp 30′, with its respective upper projection 44(just like shown and disclosed in the embodiment of the SA mode pistol40), as well as a rod lock 51 and a respective restraint 52 for the rodlock 51.

Therefore, FIG. 21 is an upper view in partial section of the backportion of the pistol 50, according to an embodiment of the presentinvention, in its resting position, while FIGS. 22 to 28 correspond tothe various steps to activate the pistol 50, after starting to activatethe trigger 5.

Specifically, FIG. 21 initially highlights the presence of thedisconnecting arm 43, which has, on its upper edge, an upper projection44, i.e. exactly the same as the disconnecting arm 43 as shown by FIGS.11 to 20 for the pistol 40. We should also highlight that the form ofactivation of the disconnecting arm 43 is exactly the same as therespective disconnecting arm 43 of the pistol 40, including withreference to its interaction with the rib 45 as present on the wing 46of the latch 6.

Furthermore, and as a specific innovation for this form of actuation ofthe invention, the pistol 50 of the DA/SA mode also comprises the rodlock 51 and a respective restraint 52 (please refer specifically to FIG.23). Particularly, the rod lock 51 has the shape of a hinge to arespective beam 53 located in parallel to the lengthwise beam of thepistol 50. The lower portion or arm 54 of said rod lock 51 has anexternal surface able to be activated by a key (not shown) as fixed tothe back side of the pistol 50, which key may be activated by the useras we will see in the description of the operation of that pistol 50further below. Furthermore, said lower portion 54 of the rod lock 51 isconstantly pushed to the outside by the action of the spring 55, forwhich reason the upper portion or arm 56 of the rod lock 51 iscorrespondingly pushed inside, always in relation to the body of thepistol 50. The upper portion 56 of the rod lock 51 comprises an arm 57which is extended in parallel to the beam 53 of the rod lock 51, as wellas a head 58 located at the upper edge of said rod lock 51.

The restraint 52 is also included, presenting basically the shape of acube, provided with a central hole (please refer to FIG. 25) throughwhich said restraint 52 is assembled over the guiding pin of the rod 21.Furthermore, and around the guiding pin of the rod 21, the spring 59 islocated, so to force said restraint 52 to the front. The restraint 52 isunable to turn around said guiding pin of the rod 21, since its lodgingin the back support 3 does not allow its angular movement. On the otherhand, said restraint 52 may be displaced lengthwise, and its maximumadvance position is limited by the wing 19 of the crosswise arm 17 ofthe rod 14.

Concerning the rod lock 51 and, more specifically, the arm 57 of saidrod lock 51, the restraint 52 may assume two possible positions. Thefirst one, as shown by FIG. 23, is the maximum advanced position of therestraint 52, in which the arm 57 of the rod lock 51 is supported by theside of the restraint 51, being therefore forced outside against theaction of the spring 55, being said position of the rod lock 51 called“open” herein. The second position, just like better shown by FIGS. 24and 25, i.e. the maximum recess position of the restraint 52, is theposition in which the restraint 52 loses contact with the arm 57 of therod lock 51 and is kept in recess against the action of the spring 59 aslocated around the guiding pin of the rod 21. In that position, andsince the arm 57 of the rod lock 51 loses contact with the restraint 52,the spring 55 works on the lower portion 54 of the rod lock 51, causingthe head 58 to be displaced to inside the pistol 50 and, morespecifically, interfering with the displacement of the wing 19 of thecrosswise arm 17 of the rod 14, wherein said position of the rod lock 51is herein called “closed”. Particularly, we should highlight that, in aclosed position, the head 58 of the rod lock 51 takes the same positionof the bush 42 of the firing device of the pistol 40, i.e. it interfereswith the advance movement of said rod 14.

The inter-relationship between these components and the other componentsas common to all forms of embodiment of the pistols 1, 40 and 50 of thepresent invention will be clearer from the following description,relative to various steps when the pistol 50 is fired.

Therefore, we start from the initial position as shown by FIG. 21,wherein the pistol 50 is able to fire, with the trigger 5 in itsextended resting position and the rod 14 also in its maximum extendedposition and interacting with the tongue 24 of the percussor 12.

Just like in the previous embodiments, FIG. 22 is a schematic view inperspective with the trigger 5 in an intermediate position, i.e. betweenthe initial and the final firing position. In that moment, the stick 16abuts the rod ramp 30′ during its return movement and is forceddownwards due to that interaction with the rod ramp 30′.

FIGS. 23 and 24 are schematic perspective views in partial sectionshowing the left side of the pistol 50, i.e. the side where the rod lock51 is positioned, in two consecutive moments. FIG. 25 is an upper endview with the pistol 50 in the same situation as shown by FIG. 24, i.e.shortly before the shot. From those figures, we can see that, byretracting the rod 14, the restraint 52 is pushed behind by theretraction movement of the wing 19 of the crosswise arm 17 of the rod14, making the arm 57 of the rod lock 51 no longer abut the side face ofthe restraint 52, and thus the rod lock 51 passes from the open position(FIG. 23) to a closed position (FIGS. 24 and 25).

When the trigger 5 reaches the end of its path, exactly as previouslydisclosed, the tongue 24 of the percussor 12 loses contact with thefront surface 18 of the crosswise arm 17, and is then quickly advancedby the action of the spring 13, striking and firing the cartridge 11 aslocated inside the chamber 9 (please refer to FIG. 26).

After the shot, as disclosed for the pistol 40, the latch 6 isretracted, carrying with it the percussor 12, as shown by FIG. 27, whichis a schematic end perspective view. Also in this case, the retractionof the latch 6 causes its rib 45 to act over the upper projection 44 ofthe disconnecting arm 43, thus displacing the rod ramp 30′ inwards andallowing the elevation of the crosswise arm 17 of the rod 14. Besidesthis known action, the tongue 24 of the percussor 12 also interacts withthe head 58 of the rod lock 51, forcing said rod lock 51 to an openposition, against the action of the spring 55. It is important tohighlight that, due to the configuration of the head 58 of the rod lock51, it does not forbid the retraction movement of the percussor 12,since its sides have the shape of a ramp, allowing the displacement ofsaid head 58 towards outside (open position of the rod lock 51).

FIG. 28 is a similar view to FIG. 27, but with the lock in its maximumretraction position. After the passage of the tongue 24 of the percussor12 by its region of interaction with the head 58, it loses contact andreturns to the closed position, again against the action of the spring55 acting over the internal part of the lower portion 54 of the rod lock51. Mechanically, this position is exactly the same as already disclosedfor FIG. 16 of the pistol 40, with the rod 14 with no contact with therod lock 30′ at an upper position; furthermore, as the crosswise arm 17is found in a closed condition, the head 58 takes the same position ofthe bush 42 for the pistol 40.

From this point on, the return movement of the trigger, made step bystep and progressively released by the user, is exactly the same asalready disclosed for the pistol 40. Therefore, with the return of thetrigger 5 and the latch 6, the percussor 12 goes only partially forward,since its advance movement is blocked by the front surface 18 of the rod14 (in an upper position). Since the rod lock 51 is in closed position,the rod 14 does not go fully forwards, the device is forced to work inthe SA mode and the path of the trigger is reduced (this effect isexactly the same as found when the trigger returns to the device of thepistol 40). The effect of trigger return may be shown from FIGS. 17 to20, keeping in mind that the blocking action then made by the bush 42 isnow undertaken by the head 58 of the rod lock 51 in its closed position.

To return the pistol 50 to the DA mode of action, said key (not shown)acting over the lower portion 54 of the rod lock 51 should be pressed.More specifically, said key is located so that, when activated, itcompresses the lower portion 54, thus opening the rod lock 51. With saidopening, the head 58 no longer blocks the advancement of the wing 19,and therefore the percussor 12 and the crosswise arm 17 advance to theinitial displacement position. As a consequence, the rod 14 pushes thetrigger 5 to its maximum extended position, which corresponds to theinitial position of use in DA mode (please refer to FIG. 2). Therefore,the pistol 50 returns to the DA mode of action wherein, for a latershot, the trigger should be displaced throughout its path, i.e. sincethe maximum extended position until the firing position as fully pressedby the user.

Finally, if there is a percussion failure, i.e. the cartridge 11 is notfired, the displacement of the latch behind will not occur and, for thisreason, the tongue 24 of the percussor 12 will not allow the rod lock 51to close, leaving the device in DA mode of action. As soon as the userreleases the extension of the trigger and then pull it again behind, therod 14 will be able to abut the tongue 24 of the percussor 12,retracting the percussor 12 and putting the pistol 50 in pre-shotposition. Said action is possible, since the rod lock 51 is in openposition and the rod 14 is in the same position as shown by FIG. 21.

From the above detailed description, we can conclude that the scope ofthe invention is fully reached. From a simple and efficient device (thefiring device of the pistol 1 acting in DAO mode), it is possible toreach both the pistol device 40 (SA) and the pistol device 50 (DA/SA)from the inclusion of a very limited number of parts. Especially, toenable the construction of the pistol 40 from the basic device of thepistol 1, the rod ramp 30′ as used additionally includes thedisconnecting arm 43 and the bush arrangement 42. In the same fashion,so to build the pistol 50, the basic device of the pistol 1 is used,also with the substitution of the rod ramp 30 with the rod ramp 30′provided with the disconnecting arm 43 (this component is exactly thesame as used in the pistol device 40), and also including the rod lock51 and the restraint 52.

We can also notice that the latch 6 as used in any of the disclosedembodiments is not changed in any way, particularly regarding theinclusion of the rib 45 as internally located in the wing 46. This ispossible, since, in the DAO action model (pistol 1, FIGS. 1 to 10), saidrib 45 does not interfere with the rod ramp 30, due to the lack of thedisconnecting arm 43.

Regarding the assembly line, the conception of a basic device which caneasily form three different kinds of pistols, is something innovativeand highly appreciated. The standardization of components in the firingdevice allows quicker production, with better quality and especiallymore economical, bearing in mind the lower quantity of different partsto be manufactured for the assembly of different guns. Furthermore, theassembly line for guns can easily support a peak in demand for aspecific model of pistol, since the vast majority of their components isidentical for all models liable for production from the basic device ofthe present invention.

1. A pistol with firing device easily adaptable to various kinds ofoperation, comprising a wrist over which a latch is moved, said wristcomprising a butt, inside which a comb, a trigger guard involving atrigger and a metal back support, intended to lodge part of thecomponents of the pistol firing device, are lodged, wherein said firingdevice comprises said trigger, hinged in pivot to a first edge of therod, said opposed end of said rod is located on the back support, saidlatch involves and lodges the percussor, located behind and aligned tothe chamber wherein the cartridge is located, and said latch has, aroundits front portion, the spring of the percussor, acting over the backstopand, on its back portion, a tongue projecting downwards, said pistolfurther comprising: a rod, in the shape of a formed laminar element andincluding, on said edge in opposition to the trigger, a stick and acrosswise arm, wherein said crosswise arm is projected from thelengthwise body of the rod, towards the central portion of the pistoland has a front surface, able to mechanically interfere with saidtongue, and a wing, frontal to the crosswise arm and projectingdownwards, in which central region there is an oblong opening; a guidingpin of the latch, fixed to the back support and with its lengthwise beamin parallel to the length of the pistol, wherein said guiding pin of therod crosses the oblong opening of the wing of the crosswise arm, so tolimit the upwards and downwards movement of said crosswise arm; and arod ramp in the form of an elongated laminar body, fixed at a lower edgeto a crosswise beam and, on the opposed upper edge, having a fold turnedoutside over the center of the pistol, thus defining a contact surfacemechanically working against the stick of the rod.
 2. The pistol ofclaim 1, wherein said pistol is intended to work in the DAO mode.
 3. Thepistol of claim 1, wherein said pistol is intended to act in the SAmode, and further comprises: a bush, in the form of a cylinder with acentral hole, and located around the guiding pin of the rod and in frontof the wing of the crosswise arm of the rod, so to limit the pathforwards of said rod; and a rod ramp also comprising a disconnectingarm, which is vertically projected upwards and includes, on its upperedge, a projection able to mechanically interfere with a rib, located inthe internal side of the fixing wing wherein said latch slides, so todisplace said rod ramp to the inner side over the pistol.
 4. The pistolof claim 1, wherein said pistol is intended to act in the DA/SA mode,and further comprises: a rod ramp also comprising a disconnecting arm,which is vertically projected upwards and includes, on its upper edge, aprojection able to mechanically interfere with a rib, located in theinternal side of the fixing wing wherein said latch slides, so todisplace said rod ramp to the inner side over the pistol; a rod lockwith the shape of a hinge to a respective beam located in parallel tothe lengthwise beam of the pistol and defining: a lower portion of saidrod lock, having an external surface able to be activated by a key, aswell as a spring, located on the internal part of said lower portion, soto constantly push said lower portion outside; and a lower portion ofthe rod lock, comprising an arm extending in parallel to the beam of therod lock, as well as a head located on the upper edge of said lock rod;and a restraint, basically in the form of a cube, provided with acentral hole through which said restraint is assembled over the guidingpin of the rod in a position between the wing of the crosswise arm ofthe rod and the spring located around the guiding pin of the rod.